Lahiri N C & Saha M N. (1992). History of the calendar. Council of Scientific and Industrial Research.
Chicago Edition CitationLahiri N C and Saha M N. History of the Calendar. New Delhi: Council of Scientific and Industrial Research, 1992.
MLA Edition CitationLahiri N C and Saha M N. History of the Calendar. Council of Scientific and Industrial Research, 1992.
Warning: These citations may not always be 100% accurate.